Tire wrapper



n qmms M. BLUMENTHAL TIRE WRAPPER Filed Feb. 24 1919 Patented (Oct, 9,1923.

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MAURICE BLUMENTHAL. 0F BROOKLYN, NEW YORK.

TIRE WRAPPER.

Application filed February 24, 1919. Serial No. 278,947.

To all 107mm it on (17 concern Be it known that I. MAURICE BnUMEN- THAL,a citizen of the United States, and resident of Brooklyn, in the countyof Kings such as are employed for wrapping pneumatic tires underconditions of commercial handling and which consist of a pliable stripwhich is wound spirally about t tire shoe or casing. While my inventiohas special relation and adaptability to wrappers employed as a coverfor tires, as above set forth, it will be understood that my improvedwrapper may be employed in any other conditions or uses forwhich awrapper of this type is adapted,

The object of my invention is to provide a simple and improved wrapperof the class set forth, which can be more economically and effectivelymanufactured, which espe cially will not be liable to tear at the edgesunder conditions of application or use, and which will furthermorepossess advantages in point of strength, durability, convenience,inexpensiveness, effectiveness, and general efliciency.

In the drawings- Figure 1 is a plan view of a portion of a length of theimproved wrapper, partly broken away to show the underlyingconstruction.

Fig. 2 is a detail cross-section, on an enlarged scale, taken on theline 2-2, Fig. 1.

Fig. 3 is a plan view, corresponding to Fig, 1, illustrating the wideroll in which the wrapper is usually produced and from which thenarrower strips for tire wrapping are cut, and indicating the cuttingpoints or lines of separation Corresponding parts in all the figures aredenoted by the same reference characters.

Tire wrappers of the class to which my invention relates have heretoforeusually been constructed of two superposed sheets of paper or analogouspliable material united over their opposing surfaces by an interveningadhesive, such as an asphaltum compound, thus producing a compositewrapping sheet, and having between the two body sheets lengths oftextile cord or wire extending diagonally at separated intervals acrossthe wrapper, in association with the adhesive compound, as a reinforce.lVrappers of the types as heretofore constructed are liable to tearing,especially at the edges, under the conditions of application and use,especially in the rough handling to which they are subjected in spiralwinding about a tire, and are therefore deficient in strength anddurability. Such wrappers are furthermore ditiicult and expensive inmanufacture, in.that the cord or string reinforcement requires theemployment of complicated and delicate machinery to feed the cords intheir positional lay during the process of passing the two body sheetsthrough compression rolls in association with the adhesive compound toproduce the composite wrapper, and the cords are also liable to break inthe process of manufacture, and rapid machinery action is precluded.

ll/lly improved wrapper comprises the two' body sheets, 1--1,respectively forming the outer surfaces, which are formed of a suitablepliable material, preferably paper or a fibrous or textile material. Thebody sheets 1-1 are superposed and united and adhesively securedtogether over the area of their opposed surfaces by a suitable adhesivecompound, 2, to produce a composite wrapping sheet The uniting compoundmay be any suitable composition, such as an asphaltum compound, but Iprefer to employ a compound which will impart t0 the improved wrapper awater,'acid and grease proof character, and for this purpose thecompound may consist of animal or vegetable fats or oils combined withmineral Waxes, such as ozocerite, mineral caoutchouc, gilsonite, orretinite, which compound W111 have a melting point approximately 375 F.and a permanently adhesive or tacky and impervious quality.

Intermediate of the outer body sheets 1-1 and in association with theuniting adhesive compound 2, longitudinal strips. as at 3-3, are locatedrespectively at the side edges of the wrapper. These strips are ofsuitable width, so that they reinforce the area ofthe edge portions ofthe wrapper at all pomts extending from the actual plane of the edge,and they are formed of a suitable pllable material, preferably a textileor mesh fabric or a paper or fibrous material having suflicient strengthas a reinforcement and as a preventive against tearing of the edge limblltltl of the wrapper under any conditions of application or use;Corresponding longitudinal strips, as at 4, preferably wider than saidedge strips, are in the preferred construction of my improved wrapperlocated intermediately of the edge strips at the central portion of thewrapper or at intervals between the edge portions, said intermediatestrips being in parallel relationship to the edge strips andinassociation with the uniting adhesive compound between the outer bodysheetsl-l.

In the preferred construction, there is also placed intermediate of theouter body sheets 1l, and in association with the uniting adhesivecompound 2, cotton waste or cotton sweepings, or a fibrous material, asat 5, which is spread and sandwiched between the body sheets over thegeneral area of the opposed surfaces thereof and forms an effec-' tivesupplementary reinforce against strain or tearing in any and alldirections. This supplementary reinforcing element is comparativelyinexpensive and easy of application in the manufacture of the improvedwrappers and is more effectively operative I as a strengthening mediumand as a resistance against tearing than would be any reinforcingelements, whether cords or paper strips, extending in straight oruniform lines. 7

In the practical and economical manufacture of my improved wrapper, thepliable body sheets 1--1 are first employed with a suflicient width "toform a plurality of tire Wrappers or wrappers of relatively-narrowwidth, for instance the width of the body sheets 1 may be initially or90". The composite Wrapper is produced by passing the associatedelements or members: through rolls, under the action of suitable mechanismfor feeding and placing the reinforcing strips and cotton waste inassociation with the uniting adhesive, one of the body sheets 1 beingfirst subjected to the application of the adhesive compound 2, and thereinforcing strips 8 and 4 and the cotton waste 5 being inserted inposition, after which the other body sheet 1 is applied over theadhesive compound and the reinforcing elements and is calendered underthe action of a heated roll to press together in securely associatedposition the several elements "or members of the composite wrapper.Then, under the action of spaced knives at points as indicated in Fig.23;, the wide wrapping sheet is cut or split to divide it into thenarrower widths for tire Wrapping or other purposes. In this dividingorcutting op eration, the longitudinal and parallel location of thereinforcing strips or tapes 4 enables an accurate line outlongitudinally in the center of said reinforceing strips, where by eachof the narrower-width wrappers thus cut or divided will essentially beprovided at each side edge with a length of longitudinal reinforcingstrips, as at 3-3, divided from the wider longitudinal strips 4. Thecomplete structural characteristics of the relatively-narrow wrapper asillustrated in Figs. 1 and 2 are thus definitely and accurately producedin the cutting. or

division of the initially wide wrapper body as illustrated in Fig. 3.-It will be understood, however, that the narrow widths of wrappers asillustrated in Figs. 1 and 2 may be initially produced in compositec0nstruction, in lieu of being divided from a wider wrapper sheet.

In practice I preferably employ, for the longitudinal reinforcing strips3-3 and 4, a tape of cloth or textile fabric, but any suitable materialor strong paper having the requisite resistance to tearing may be used.

While the calendering or compression of the composite wrapper body isdesigned to render the outer body sheets l1 water, acid and grease'proofunder the action of the intermediate uniting compound of the characterhereinbefore referred to, the improved Wrappers may be if desiredtreated in any preferred manner to waterproof the outer surfaces of thebody sheets.

I do not desire to be understood as limiting myself to the detailfeatures of construction as herein shown and described, as it ismanifest that variations and modifications therein may be resorted to,in the adaptation of my invention to varying conditions of use, withoutdeparting from the spirit and scope of my invention and improvements. Itherefore reserve the right to all such variations and modifications asproperly fall within the scope of my invention and the terms of thefollowing claims.

Having thus described my invention, I claim and desire to secure byLetters Patent:

1. An improved wrapper of the class described, comprising superposedpliable outer body sheets united and adhesively secured together attheir opposed surfaces by an adhesive compound, and textile or fibrouswaste or sweepings forming an internal filler mass locatedintermediately of-said outer body sheet and secured as a composite layerin association with the uniting adhesive compound and extending as asurface mass over the general area of the opposed surfaces ofintermediately of said outer body sheets and secured as a compositelayer in association with the uniting adhesive compound and extending asa surface mass over the general area of the opposed surfaces of saidouter body sheets.

3. An improved Wrapper of the class described, comprising superposedpliable outer body sheets, reinforcing elements extending intermediatelyof said outer body sheets and comprising a fibrous filler forming aninternal body mass extending as a composite layer over the general areaof the opposed surfaces of said outer sheets, and a uniting adhesivecompound extending over the area of the opposed surfaces of said outerbed sheets and in association with said reinforcing elements and havinga permanently Waterproof and adhesive character.

in testimony whereof I have signed the foregoing specifications.

MAURICE BLUldENTHAL.

